| 0010 | Abkhazian | Abkhazian | abk |
| 0020 | Achinese | Achinese | ace |
| 0030 | Acoli | Acoli | ach |
| 0040 | Adangme | Adangme | ada |
| 0050 | Adygei | Adygei | ady |
| 0060 | Adyghe | Adyghe | ady |
| 0070 | Afar | Afar | aar |
| 0080 | Afrihili | Afrihili | afh |
| 0090 | Afrikaans | Afrikaans | afr |
| 0100 | Afro-Asiatic (Other) | Afro-Asiatic (Other) | afa |
| 0110 | Akan | Akan | aka |
| 0120 | Akkadian | Akkadian | akk |
| 0130 | Albanian | Albanian | alb |
| 0140 | Aleut | Aleut | ale |
| 0150 | Algonquian languages | Algonquian languages | alg |
| 0160 | Altaic (Other) | Altaic (Other) | tut |
| 0170 | Amharic | Amharic | amh |
| 0180 | Apache languages | Apache languages | apa |
| 0190 | Arabic | Arabic | ara |
| 0200 | Aragonese | Aragonese | arg |
| 0210 | Aramaic | Aramaic | arc |
| 0220 | Arapaho | Arapaho | arp |
| 0230 | Araucanian | Araucanian | arn |
| 0240 | Arawak | Arawak | arw |
| 0250 | Armenian | Armenian | arm |
| 0260 | Artificial (Other) | Artificial (Other) | art |
| 0270 | Assamese | Assamese | asm |
| 0280 | Asturian | Asturian | ast |
| 0290 | Athapascan languages | Athapascan languages | ath |
| 0300 | Australian languages | Australian languages | aus |
| 0310 | Austronesian (Other) | Austronesian (Other) | map |
| 0320 | Avaric | Avaric | ava |
| 0330 | Avestan | Avestan | ave |
| 0340 | Awadhi | Awadhi | awa |
| 0350 | Aymara | Aymara | aym |
| 0360 | Azerbaijani | Azerbaijani | aze |
| 0370 | Bable | Bable | ast |
| 0380 | Balinese | Balinese | ban |
| 0390 | Baltic (Other) | Baltic (Other) | bat |
| 0400 | Baluchi | Baluchi | bal |
| 0410 | Bambara | Bambara | bam |
| 0420 | Bamileke languages | Bamileke languages | bai |
| 0430 | Banda | Banda | bad |
| 0440 | Bantu (Other) | Bantu (Other) | bnt |
| 0450 | Basa | Basa | bas |
| 0460 | Bashkir | Bashkir | bak |
| 0470 | Basque | Basque | baq |
| 0480 | Batak (Indonesia) | Batak (Indonesia) | btk |
| 0490 | Beja | Beja | bej |
| 0500 | Belarusian | Belarusian | bel |
| 0510 | Bemba | Bemba | bem |
| 0520 | Bengali; ben | Bengali; ben | ben |
| 0530 | Berber (Other) | Berber (Other) | ber |
| 0540 | Bhojpuri | Bhojpuri | bho |
| 0550 | Bihari | Bihari | bih |
| 0560 | Bikol | Bikol | bik |
| 0570 | Bilin | Bilin | byn |
| 0580 | Bini | Bini | bin |
| 0590 | Bislama | Bislama | bis |
| 0600 | Blin | Blin | byn |
| 0610 | Bokmsl, Norwegian | Bokmsl, Norwegian | nob |
| 0620 | Bosnian | Bosnian | bos |
| 0630 | Braj | Braj | bra |
| 0640 | Breton | Breton | bre |
| 0650 | Buginese | Buginese | bug |
| 0660 | Bulgarian | Bulgarian | bul |
| 0670 | Buriat | Buriat | bua |
| 0680 | Burmese | Burmese | bur |
| 0690 | Caddo | Caddo | cad |
| 0700 | Carib | Carib | car |
| 0710 | Castilian | Castilian | spa |
| 0720 | Catalan | Catalan | cat |
| 0730 | Caucasian (Other) | Caucasian (Other) | cau |
| 0740 | Cebuano | Cebuano | ceb |
| 0750 | Celtic (Other) | Celtic (Other) | cel |
| 0760 | Central American Indian (Other) | Central American Indian (Other) | cai |
| 0770 | Chagatai | Chagatai | chg |
| 0780 | Chamic languages | Chamic languages | cmc |
| 0790 | Chamorro | Chamorro | cha |
| 0800 | Chechen | Chechen | che |
| 0810 | Cherokee | Cherokee | chr |
| 0820 | Chewa | Chewa | nya |
| 0830 | Cheyenne | Cheyenne | chy |
| 0840 | Chibcha | Chibcha | chb |
| 0850 | Chichewa | Chichewa | nya |
| 0860 | Chinese | Chinese | chi |
| 0870 | Chinook jargon | Chinook jargon | chn |
| 0880 | Chipewyan | Chipewyan | chp |
| 0890 | Choctaw | Choctaw | cho |
| 0900 | Chuang | Chuang | zha |
| 0910 | Church Slavic | Church Slavic | chu |
| 0920 | Church Slavonic | Church Slavonic | chu |
| 0930 | Chuukese | Chuukese | chk |
| 0940 | Chuvash | Chuvash | chv |
| 0950 | Classical Newari | Classical Newari | nwc |
| 0960 | Coptic | Coptic | cop |
| 0970 | Cornish | Cornish | cor |
| 0980 | Corsican | Corsican | cos |
| 0990 | Cree | Cree | cre |
| 1000 | Creek | Creek | mus |
| 1010 | Creoles and pidgins (Other) | Creoles and pidgins (Other) | crp |
| 1020 | Creoles and pidgins, English-based (Other) | Creoles and pidgins, English-based (Other) | cpe |
| 1030 | Creoles and pidgins, Frenchbased (Other) | Creoles and pidgins, Frenchbased (Other) | cpf |
| 1040 | Creoles and pidgins, Portuguese-based (Other) | Creoles and pidgins, Portuguese-based (Other) | cpp |
| 1050 | Crimean Tatar | Crimean Tatar | crh |
| 1060 | Crimean Turkish | Crimean Turkish | crh |
| 1070 | Croatian | Croatian | hrv |
| 1080 | Cushitic (Other) | Cushitic (Other) | cus |
| 1090 | Czech | Czech | cze |
| 1100 | Dakota | Dakota | dak |
| 1110 | Danish | Danish | dan |
| 1120 | Dargwa | Dargwa | dar |
| 1130 | Dayak | Dayak | day |
| 1140 | Delaware | Delaware | del |
| 1150 | Dinka | Dinka | din |
| 1160 | Divehi | Divehi | div |
| 1170 | Dogri | Dogri | doi |
| 1180 | Dogrib | Dogrib | dgr |
| 1190 | Dravidian (Other) | Dravidian (Other) | dra |
| 1200 | Duala | Duala | dua |
| 1210 | Dutch/ Flemish | Dutch/ Flemish | dut |
| 1220 | Dutch, Middle (ca. 1050-1350) | Dutch, Middle (ca. 1050-1350) | dut |
| 1230 | Dyula | Dyula | dyu |
| 1240 | Dzongkha | Dzongkha | dzo |
| 1250 | Efik | Efik | efi |
| 1270 | Ekajuk | Ekajuk | eka |
| 1280 | Elamite | Elamite | elx |
| 1290 | English | English | eng |
| 1320 | Erzya | Erzya | myv |
| 1330 | Esperanto | Esperanto | epo |
| 1340 | Estonian | Estonian | est |
| 1350 | Ewe | Ewe | ewe |
| 1360 | Ewondo | Ewondo | ewo |
| 1370 | Fang | Fang | fan |
| 1380 | Fanti | Fanti | fat |
| 1390 | Faroese | Faroese | fao |
| 1400 | Fijian | Fijian | fij |
| 1401 | Filipino | Filipino | fil |
| 1410 | Finnish | Finnish | fin |
| 1420 | Finno-Ugrian (Other) | Finno-Ugrian (Other) | fiu |
| 1430 | Fon | Fon | fon |
| 1440 | French | French | fre |
| 1470 | Frisian | Frisian | frr |
| 1480 | Friulian | Friulian | fur |
| 1490 | Fulah | Fulah | ful |
| 1500 | Ga | Ga | gaa |
| 1510 | Gaelic | Gaelic | gla |
| 1520 | Gallegan | Gallegan | glg |
| 1530 | Ganda | Ganda | lug |
| 1540 | Gayo | Gayo | gay |
| 1550 | Gbaya | Gbaya | gba |
| 1560 | Geez | Geez | gez |
| 1570 | Georgian | Georgian | geo |
| 1580 | German | German | ger |
| 1590 | German, Low | German, Low | nds |
| 1620 | Germanic (Other) | Germanic (Other) | gem |
| 1630 | Gikuyu: Kikkuyu | Gikuyu: Kikkuyu | kik |
| 1640 | Gilbertese | Gilbertese | gil |
| 1650 | Gondi | Gondi | gon |
| 1660 | Gorontalo | Gorontalo | gor |
| 1670 | Gothic | Gothic | got |
| 1680 | Grebo | Grebo | grb |
| 1700 | Greek, Modern (1453-) | Greek, Modern (1453-) | GRE |
| 1701 | Greenlandic; Kalaallisut | Greenlandic; Kalaallisut | kal |
| 1710 | Guarani | Guarani | grn |
| 1720 | Gujarati | Gujarati | guj |
| 1730 | Gwich'in | Gwich'in | gwi |
| 1740 | Haida | Haida | hai |
| 1750 | Haitian | Haitian | hat |
| 1760 | Haitian Creole | Haitian Creole | hat |
| 1770 | Hausa | Hausa | hau |
| 1780 | Hawaiian | Hawaiian | haw |
| 1790 | Hebrew | Hebrew | heb |
| 1800 | Herero | Herero | her |
| 1810 | Hiligaynon | Hiligaynon | hil |
| 1820 | Himachali | Himachali | him |
| 1830 | Hindi | Hindi | hin |
| 1840 | Hiri Motu | Hiri Motu | hmo |
| 1850 | Hittite | Hittite | hit |
| 1860 | Hmong | Hmong | hmn |
| 1870 | Hungarian | Hungarian | hun |
| 1880 | Hupa | Hupa | hup |
| 1890 | Iban | Iban | iba |
| 1900 | Icelandic | Icelandic | ice |
| 1910 | Ido | Ido | ido |
| 1920 | Igbo | Igbo | ibo |
| 1930 | Ijo | Ijo | ijo |
| 1940 | Iloko | Iloko | ilo |
| 1950 | Inari Sami | Inari Sami | smn |
| 1960 | Indic (Other) | Indic (Other) | inc |
| 1970 | Indo-European (Other) | Indo-European (Other) | ine |
| 1980 | Indonesian | Indonesian | ind |
| 1990 | Ingush | Ingush | inh |
| 2000 | Interlingua (International Auxiliary Language Asso | Interlingua (International Auxiliary Language Asso | ina |
| 2010 | Interlingue | Interlingue | ile |
| 2020 | Inuktitut | Inuktitut | iku |
| 2030 | Inupiaq | Inupiaq | ipk |
| 2040 | Iranian (Other) | Iranian (Other) | ira |
| 2050 | Irish | Irish | gle |
| 2080 | Iroquoian languages | Iroquoian languages | iro |
| 2090 | Italian | Italian | ita |
| 2100 | Japanese | Japanese | jpn |
| 2110 | Javanese | Javanese | jav |
| 2120 | Judeo-Arabic | Judeo-Arabic | jrb |
| 2130 | Judeo-Persian | Judeo-Persian | jpr |
| 2140 | Kabardian | Kabardian | kbd |
| 2150 | Kabyle | Kabyle | kab |
| 2160 | Kachin | Kachin | kac |
| 2170 | Kalaallisut; Greenlandic | Kalaallisut; Greenlandic | kal |
| 2180 | Kalmyk | Kalmyk | xal |
| 2190 | Kamba | Kamba | kam |
| 2200 | Kannada | Kannada | kan |
| 2210 | Kanuri | Kanuri | kau |
| 2220 | Karachay-Balkar | Karachay-Balkar | krc |
| 2230 | Kara-Kalpak | Kara-Kalpak | kaa |
| 2240 | Karen | Karen | kar |
| 2250 | Kashmiri | Kashmiri | kas |
| 2260 | Kashubian | Kashubian | csb |
| 2270 | Kawi | Kawi | kaw |
| 2280 | Kazakh | Kazakh | kaz |
| 2290 | Khasi | Khasi | kha |
| 2300 | Khmer | Khmer | khm |
| 2310 | Khoisan (Other) | Khoisan (Other) | khi |
| 2320 | Khotanese | Khotanese | kho |
| 2330 | Kikuyu | Kikuyu | kik |
| 2340 | Kimbundu | Kimbundu | kmb |
| 2350 | Kinyarwanda | Kinyarwanda | kin |
| 2360 | Kirghiz | Kirghiz | kir |
| 2370 | Klingon | Klingon | tlh |
| 2380 | Komi | Komi | kom |
| 2390 | Kongo | Kongo | kon |
| 2400 | Konkani | Konkani | kok |
| 2410 | Korean | Korean | kor |
| 2420 | Kosraean | Kosraean | kos |
| 2430 | Kpelle | Kpelle | kpe |
| 2440 | Kru | Kru | kro |
| 2450 | Kuanyama | Kuanyama | kua |
| 2460 | Kumyk | Kumyk | kum |
| 2470 | Kurdish | Kurdish | kur |
| 2480 | Kurukh | Kurukh | kru |
| 2490 | Kutenai | Kutenai | kut |
| 2500 | Kwanyama | Kwanyama | kua |
| 2510 | Ladino | Ladino | lad |
| 2520 | Lahnda | Lahnda | lah |
| 2530 | Lamba | Lamba | lam |
| 2540 | Lao | Lao | lao |
| 2550 | Latin | Latin | lat |
| 2560 | Latvian | Latvian | lav |
| 2570 | Letzeburgesch | Letzeburgesch | ltz |
| 2580 | Lezghian | Lezghian | lez |
| 2590 | Limburgan | Limburgan | lim |
| 2600 | Limburger | Limburger | lim |
| 2610 | limburgish | limburgish | lim |
| 2620 | Lingala | Lingala | lin |
| 2630 | Lithuanian | Lithuanian | lit |
| 2640 | Lojban | Lojban | jbo |
| 2650 | Low German | Low German | nds |
| 2660 | Low Saxon | Low Saxon | nds |
| 2670 | Lower Sorbian | Lower Sorbian | dsb |
| 2680 | Lozi | Lozi | loz |
| 2690 | Luba-Katanga | Luba-Katanga | lub |
| 2700 | Luba-Lulua | Luba-Lulua | lua |
| 2710 | Luiseno | Luiseno | lui |
| 2720 | Lule Sami | Lule Sami | smj |
| 2730 | Lunda | Lunda | lun |
| 2740 | Luo (Kenya and Tanzania) | Luo (Kenya and Tanzania) | luo |
| 2750 | Lushai | Lushai | lus |
| 2760 | Luxembourgish | Luxembourgish | ltz |
| 2770 | Macedonian | Macedonian | mac |
| 2780 | Madurese | Madurese | mad |
| 2790 | Magahi | Magahi | mag |
| 2800 | Maithili | Maithili | mai |
| 2810 | Makasar | Makasar | mak |
| 2820 | Malagasy | Malagasy | mlg |
| 2830 | Malay | Malay | may |
| 2840 | Malayalam | Malayalam | mal |
| 2850 | Maltese | Maltese | mlt |
| 2860 | Manchu | Manchu | mnc |
| 2870 | Mandar | Mandar | mdr |
| 2880 | Mandingo | Mandingo | man |
| 2890 | Manipuri | Manipuri | mni |
| 2900 | Manobo languages | Manobo languages | mno |
| 2910 | Manx | Manx | glv |
| 2920 | Maori | Maori | mao |
| 2930 | Marathi | Marathi | mar |
| 2940 | Mari | Mari | chm |
| 2950 | Marshallese | Marshallese | mah |
| 2960 | Marwari | Marwari | mwr |
| 2970 | Masai | Masai | mas |
| 2980 | Mayan languages | Mayan languages | myn |
| 2990 | Mende | Mende | men |
| 3000 | Micmac | Micmac | mic |
| 3001 | Mi'kmaq | Mi'kmaq | mic |
| 3010 | Minangkabau | Minangkabau | min |
| 3011 | Mirandese | Mirandese | mwl |
| 3020 | Miscellaneous languages | Miscellaneous languages | mis |
| 3030 | Mohawk | Mohawk | moh |
| 3040 | Moksha | Moksha | mdf |
| 3050 | Moldavian | Moldavian | rum |
| 3060 | Mon-Khmer (Other) | Mon-Khmer (Other) | mkh |
| 3070 | Mongo | Mongo | lol |
| 3080 | Mongolian | Mongolian | mon |
| 3090 | Mossi | Mossi | mos |
| 3100 | Multiple languages | Multiple languages | mul |
| 3110 | Munda languages | Munda languages | mun |
| 3120 | Nahuatl | Nahuatl | nah |
| 3130 | Nauru | Nauru | nau |
| 3140 | Navaho | Navaho | nav |
| 3150 | Navajo | Navajo | nav |
| 3160 | Ndebele, North | Ndebele, North | nde |
| 3170 | Ndebele, South | Ndebele, South | nbl |
| 3180 | Ndonga | Ndonga | ndo |
| 3190 | Neapolitan | Neapolitan | nap |
| 3200 | Nepali | Nepali | nep |
| 3210 | Newari; Nepal Bhasa | Newari; Nepal Bhasa | new |
| 3220 | Nias | Nias | nia |
| 3230 | Niger-Kordofanian (Other) | Niger-Kordofanian (Other) | nic |
| 3240 | Nilo-Saharan (Other) | Nilo-Saharan (Other) | ssa |
| 3250 | Niuean | Niuean | niu |
| 3260 | Nogai | Nogai | nog |
| 3270 | Norse, Old | Norse, Old | non |
| 3280 | North American Indian (Other) | North American Indian (Other) | nai |
| 3290 | Northern Sami | Northern Sami | sme |
| 3291 | Northern Sotho | Northern Sotho | nso |
| 3300 | North Ndebele | North Ndebele | nde |
| 3310 | Norwegian | Norwegian | nor |
| 3320 | Norwegian Bokmsl | Norwegian Bokmsl | nob |
| 3330 | Norwegian Nynorsk | Norwegian Nynorsk | nno |
| 3340 | Nubian languages | Nubian languages | nub |
| 3350 | Nyamwezi | Nyamwezi | nym |
| 3360 | Nyanja | Nyanja | nya |
| 3370 | Nyankole | Nyankole | nyn |
| 3380 | Nynorsk, Norwegian | Nynorsk, Norwegian | nno |
| 3390 | Nyoro | Nyoro | nyo |
| 3400 | Nzima | Nzima | nzi |
| 3410 | Occitan (post 1500) | Occitan (post 1500) | oci |
| 3420 | Ojibwa | Ojibwa | oji |
| 3430 | Old Bulgarian | Old Bulgarian | chu |
| 3440 | Old Church Slavonic | Old Church Slavonic | chu |
| 3450 | Old Newari | Old Newari | nwc |
| 3460 | Old Slavonic | Old Slavonic | chu |
| 3470 | Oriya | Oriya | ori |
| 3480 | Oromo | Oromo | orm |
| 3490 | Osage | Osage | osa |
| 3500 | Ossetian | Ossetian | oss |
| 3510 | Ossetic | Ossetic | oss |
| 3520 | Otomian languages | Otomian languages | oto |
| 3530 | Pahlavi | Pahlavi | pal |
| 3540 | Palauan | Palauan | pau |
| 3550 | Pali | Pali | pli |
| 3560 | Pampanga | Pampanga | pam |
| 3570 | Pangasinan | Pangasinan | pag |
| 3580 | Panjabi | Panjabi | pan |
| 3590 | Papiamento | Papiamento | pap |
| 3600 | Papuan (Other) | Papuan (Other) | paa |
| 3601 | Pedi | Pedi | nso |
| 3610 | Persian | Persian | per |
| 3630 | Philippine (Other) | Philippine (Other) | phi |
| 3640 | Phoenician | Phoenician | phn |
| 3641 | Pilipino | Pilipino | fil |
| 3650 | Pohnpeian | Pohnpeian | pon |
| 3660 | Polish | Polish | pol |
| 3670 | Portuguese | Portuguese | por |
| 3680 | Prakrit languages | Prakrit languages | pra |
| 3690 | Provental;Occitan (post 1500) | Provental;Occitan (post 1500) | oci |
| 3710 | Punjabi | Punjabi | pan |
| 3720 | Pushto | Pushto, Pashto | pus |
| 3730 | Quechua | Quechua | que |
| 3731 | Quiche | Quiche | myn |
| 3740 | Raeto-Romance | Raeto-Romance | roa |
| 3750 | Rajasthani | Rajasthani | raj |
| 3760 | Rapanui | Rapanui | rap |
| 3770 | Rarotongan | Rarotongan | rar |
| 3780 | Reserved for local user | Reserved for local user | qaa |
| 3790 | Romance (Other) | Romance (Other) | roh |
| 3800 | Romanian | Romanian | rum |
| 3810 | Romany | Romany | rom |
| 3820 | Rundi | Rundi | run |
| 3830 | Russian | Russian | rus |
| 3840 | Salishan languages | Salishan languages | sal |
| 3850 | Samaritan Aramaic | Samaritan Aramaic | sam |
| 3860 | Sami languages (Other) | Sami languages (Other) | smi |
| 3870 | Samoan | Samoan | smo |
| 3880 | Sandawe | Sandawe | sad |
| 3890 | Sango | Sango | sag |
| 3900 | Sanskrit | Sanskrit | san |
| 3910 | Santali | Santali | sat |
| 3920 | Sardinian | Sardinian | srd |
| 3930 | Sasak | Sasak | sas |
| 3940 | Saxon, Low | Saxon, Low | nds |
| 3950 | Scots | Scots | sco |
| 3960 | Scottish Gaelic | Scottish Gaelic | gla |
| 3970 | Selkup | Selkup | sel |
| 3980 | Semitic (Other) | Semitic (Other) | sem |
| 3981 | Sepedi | Sepedi | nso |
| 3990 | Serbian | Serbian | srp |
| 4000 | Serer | Serer | srr |
| 4010 | Shan | Shan | shn |
| 4020 | Shona | Shona | sna |
| 4030 | Sichuan Yi | Sichuan Yi | iii |
| 4031 | Sicilian | Sicilian | scn |
| 4040 | Sidamo | Sidamo | sid |
| 4050 | Sign languages | Sign languages | sgn |
| 4060 | Siksika | Siksika | bla |
| 4070 | Sindhi | Sindhi | snd |
| 4071 | Sinhala | Sinhala | sin |
| 4080 | Sinhalese | Sinhalese | sin |
| 4090 | Sino-Tibetan (Other) | Sino-Tibetan (Other) | sit |
| 4100 | Siouan languages | Siouan languages | sio |
| 4110 | Skolt Sami | Skolt Sami | sms |
| 4120 | Slave (Athapascan) | Slave (Athapascan) | den |
| 4130 | Slavic (Other) | Slavic (Other) | sla |
| 4140 | Slovak | Slovak | slo |
| 4150 | Slovenian | Slovenian | slv |
| 4160 | Sogdian | Sogdian | sog |
| 4170 | Somali | Somali | som |
| 4180 | Songhai | Songhai | son |
| 4190 | Soninke | Soninke | snk |
| 4200 | Sorbian languages | Sorbian languages | wen |
| 4210 | Sotho, Northern | Sotho, Northern | nso |
| 4220 | Sotho, Southern | Sotho, Southern | sot |
| 4230 | South American Indian (Other) | South American Indian (Other) | sai |
| 4235 | Southern Altai | Southern Altai | alt |
| 4240 | Southern Sami | Southern Sami | sma |
| 4250 | South Ndebele | South Ndebele | nbl |
| 4260 | Spanish | Spanish | spa |
| 4270 | Sukuma | Sukuma | suk |
| 4280 | Sumerian | Sumerian | sux |
| 4290 | Sundanese | Sundanese | sun |
| 4300 | Susu | Susu | sus |
| 4310 | Swahili | Swahili | swa |
| 4320 | Swati | Swati | ssw |
| 4330 | Swedish | Swedish | swe |
| 4340 | Syriac | Syriac | syr |
| 4350 | Tagalog | Tagalog | tgl |
| 4360 | Tahitian | Tahitian | tah |
| 4370 | Tai (Other) | Tai (Other) | tai |
| 4380 | Tajik | Tajik | tgk |
| 4390 | Tamashek | Tamashek | tmh |
| 4400 | Tamil | Tamil | tam |
| 4410 | Tatar | Tatar | tat |
| 4420 | Telugu | Telugu | tel |
| 4430 | Tereno | Tereno | ter |
| 4440 | Tetum | Tetum | tet |
| 4450 | Thai | Thai | tha |
| 4460 | Tibetan | Tibetan | tib |
| 4470 | Tigre | Tigre | tig |
| 4480 | Tigrinya | Tigrinya | tir |
| 4490 | Timne | Timne | tem |
| 4500 | Tiv | Tiv | tiv |
| 4510 | tlhlngan-Hol | tlhlngan-Hol | tlh |
| 4520 | Tlingit | Tlingit | tli |
| 4530 | Tok Pisin | Tok Pisin | tpi |
| 4540 | Tokelau | Tokelau | tkl |
| 4550 | Tonga (Nyasa) | Tonga (Nyasa) | tog |
| 4560 | Tonga (Tonga Islands) | Tonga (Tonga Islands) | ton |
| 4570 | Tsimshian | Tsimshian | tsi |
| 4580 | Tsonga | Tsonga | tso |
| 4590 | Tswana | Tswana | tsn |
| 4600 | Tumbuka | Tumbuka | tum |
| 4610 | Tupi languages | Tupi languages | tup |
| 4620 | Turkish | Turkish | tur |
| 4640 | Turkmen | Turkmen | tuk |
| 4650 | Tuvalu | Tuvalu | tvl |
| 4660 | Tuvinian | Tuvinian | tyv |
| 4670 | Twi | Twi | twi |
| 4680 | Udmurt | Udmurt | udm |
| 4690 | Ugaritic | Ugaritic | uga |
| 4700 | Uighur; Uyghur | Uighur; Uyghur | uig |
| 4710 | Ukrainian | Ukrainian | ukr |
| 4720 | Umbundu | Umbundu | umb |
| 4730 | Undetermined | Undetermined | und |
| 4740 | Upper Sorbian | Upper Sorbian | hsb |
| 4750 | Urdu | Urdu | urd |
| 4760 | Uzbek | Uzbek | uzb |
| 4770 | Vai | Vai | vai |
| 4780 | Valencian | Valencian | cat |
| 4790 | Venda | Venda | ven |
| 4800 | Vietnamese | Vietnamese | vie |
| 4810 | Volapnk | Volapnk | vol |
| 4820 | Votic | Votic | vot |
| 4830 | Wakashan languages | Wakashan languages | wak |
| 4840 | Walamo | Walamo | wal |
| 4850 | Walloon | Walloon | wln |
| 4860 | Waray | Waray | war |
| 4870 | Washo | Washo | was |
| 4880 | Welsh | Welsh | wel |
| 4890 | Wolof | Wolof | wol |
| 4900 | Xhosa | Xhosa | xho |
| 4910 | Yakut | Yakut | sah |
| 4920 | Yao | Yao | yao |
| 4930 | Yapese | Yapese | yap |
| 4940 | Yiddish | Yiddish | yid |
| 4950 | Yoruba | Yoruba | yor |
| 4960 | Yupik languages | Yupik languages | ypk |
| 4970 | Zande | Zande | znd |
| 4980 | Zapotec | Zapotec | zap |
| 4990 | Zenaga | Zenaga | zen |
| 5000 | Zhuang | Zhuang | zha |
| 5010 | Zulu | Zulu | zul |
| 5011 | Zuni | Zuni | zun |
| 6010 | Afghan Persian, Dari | Afghan Persian, Dari | prs |
| 6020 | Kiche, Quiché | Kiche, Quiché | quc |
| 6030 | Kabuverdianu | Kabuverdianu | kea |
| 9999 | Other languages | Other languages | |